diff --git a/conduit-lwt-unix.opam b/conduit-lwt-unix.opam
index fda23e34..38506d8d 100644
--- a/conduit-lwt-unix.opam
+++ b/conduit-lwt-unix.opam
@@ -26,7 +26,7 @@ depends: [
 depopts: ["tls" "lwt_ssl" "launchd"]
 conflicts: [
   "tls" {< "0.14.0"}
-  "ssl" {< "0.5.9"}
+  "ssl" {< "0.5.12"}
 ]
 build: [
   ["dune" "subst"] {dev}